西部矿区接菌对风化煤与黄土配比的土壤改良效应

发布时间：2018-01-14 08:00

本文关键词：西部矿区接菌对风化煤与黄土配比的土壤改良效应　出处：《干旱地区农业研究》2016年02期 　论文类型：期刊论文

【摘要】：针对西部矿区土壤贫瘠、有效养分缺乏和作物难以生长的现状,采用盆栽试验方法,风化煤与黄土按不同配比混合为供试基质,玉米为供试植物,研究接种丛枝菌根真菌对玉米生长的影响及其对不同混合基质的改良效应,寻求风化煤与黄土最佳配比。结果表明:接种丛枝菌根真菌促进了玉米的生长和对矿质元素的吸收,在风化煤与黄土质量比(1∶1)时菌根生态效应达到最大,玉米干质量、叶色值、地上部分氮磷钾累积量分别达到4.61 g·株~(-1),41.17,53.01 mg·株~(-1),7.15 mg·株~(-1),79.42 mg·株~(-1);风化煤与黄土(1∶1)处理菌丝密度达到4.91 m·g~(~(-1)),且玉米根系侵染率达到最大。随着风化煤比例的增加,根际土壤中球囊霉素相关蛋白和酸性磷酸酶活性逐渐递增。丛枝菌根与风化煤的协同作用促进了作物的生长,改善了根际土壤微环境,实现了对沟壑区土壤的改良和培肥。
[Abstract]:In view of the present situation of poor soil, lack of available nutrients and difficult growth of crops in western mining area, pot experiment method was adopted. Weathered coal and loess were mixed as test substrate and maize as test plant according to different ratio. The effects of inoculation of arbuscular mycorrhizal fungi on the growth of maize and the improvement of different mixed substrates were studied. The results showed that inoculation of arbuscular mycorrhizal fungi promoted the growth of maize and the absorption of mineral elements. When the ratio of weathered coal to loess was 1: 1), the ecological effect of mycorrhizal was the highest, the dry weight of maize, leaf color value and the accumulation of nitrogen, phosphorus and potassium in the aboveground part were 4.61 g 路plant (-1). (41.17) 53.01 mg 路L ~ (-1) ~ (-1) ~ 7.15 mg 路L ~ (-1) ~ 79.42 mg 路L ~ (-1) ~ (-1); The mycelium density of weathered coal and loess (1: 1) treatment reached 4.91 m 路g ~ (-1), and the infection rate of maize root system reached the maximum. The ratio of weathered coal increased with the increase of the ratio of weathered coal. The activities of balloon mycin associated protein and acid phosphatase in rhizosphere soil increased gradually. The synergistic effect of arbuscular mycorrhizal and weathered coal promoted the growth of crops and improved the microenvironment of rhizosphere soil. The soil was improved and fertilized in gully region.
【作者单位】：中国矿业大学(北京)煤炭资源与安全开采国家重点实验室;中国矿业大学(北京)地球科学与测绘工程学院;
【基金】：863计划资助项目(2013AA102904)
【分类号】：S156
【正文快照】： 西部矿区大多位于干旱半干旱地区,半干旱黄土沟壑区是黄土高原水土流失比较严重的地区,沟壑区植被覆盖率低,土壤质地疏松,土壤侵蚀作用十分强烈[1]。沟壑区土壤贫瘠,基础肥力低,供植物生长的有效养分缺乏[2]。采煤扰动加剧了土壤中水分和养分的流失,生态环境遭到破坏,生物多样

【相似文献】